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If α and β are the roots of \(2x^{2} - 5x +...

If α and β are the roots of 2x25x+6=0, find the equation whose roots are (α+1) and (β+1).

A.

2x29x+15=0

B.

2x29x+13=0

C.

2x29x13=0

D.

2x29x15=0

Correct answer is B

Note: Given the sum of the roots and its product, we can get the equation using the formula:

x2(α+β)x+(αβ)=0. This will be used later on in the course of our solution.

Given equation: 2x25x+6=0;a=2,b=5,c=6.

α+β=ba=(5)2=52

αβ=ca=62=3

Given the roots of the new equation as (α+1) and (β+1), their sum and product will be

(α+1)+(β+1)=α+β+2=52+2=92=ba

(α+1)(β+1)=αβ+α+β+1=3+52+1=132=ca

The new equation is given by: x2(ba)x+(ca)=0

= x2(92)x+132=2x29x+13=0